/*
 * Copyright 2017 Huawei Technologies Co., Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.servicecomb.springboot.starter.configuration;

import org.apache.commons.configuration.AbstractConfiguration;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ConfigurableApplicationContext;

import com.netflix.config.ConfigurationManager;

/**
 *
 */
public final class CseDelegatingProxyUtils {

  private static final String APPLICATION_CONTEXT = ApplicationContext.class.getName();

  private CseDelegatingProxyUtils() {
  }

  public static <T> T getNamedInstance(Class<T> type, String name) {
    ApplicationContext context = (ApplicationContext) ConfigurationManager
        .getConfigInstance()
        .getProperty(APPLICATION_CONTEXT);
    return context != null && context.containsBean(name) ? context
        .getBean(name, type) : null;
  }

  public static <T> T getInstanceWithPrefix(Class<T> type, String prefix) {
    String name = prefix + type.getSimpleName();
    return getNamedInstance(type, name);
  }

  public static void addApplicationContext(ConfigurableApplicationContext context) {
    AbstractConfiguration config = ConfigurationManager.getConfigInstance();
    config.clearProperty(APPLICATION_CONTEXT);
    config.setProperty(APPLICATION_CONTEXT, context);
  }
}
